5.2 Fiscal policy
- Syllabus
- 9708–2026–2027
- Topic
- 5.2
- Level
- AS
Learning objectives
5.2.1Government budget• Meaning of government budget5.2.2Budget deficit and surplus• Distinction between a government budget deficit and a government budget surplus5.2.3National debt• Meaning and significance of the national debt5.2.4Taxation• Taxation:- types of taxes: direct/indirect, progressive/regressive/proportional- rates of tax: marginal and average rates of taxation (mrt, art)- reasons for taxation5.2.5Government spending• Government spending:- types of spending: capital (investment) and current- reasons for government spending5.2.6Fiscal policy stance• Distinction between expansionary and contractionary fiscal policy5.2.7Fiscal policy in AD/AS• AD/AS analysis of the impact of expansionary and contractionary fiscal policy on the equilibrium level of national income and the level of real output, the price level and employment
The government budget records planned revenue and spending
A government budget sets out expected public revenue and expenditure for a period. Current spending covers items such as wages and transfers; capital spending creates or improves assets; revenue mainly comes from taxes and other receipts.
The budget position is a flow over the period, not the stock of debt already accumulated. A budget balance compares revenue with expenditure before financing decisions are considered.
If revenue is 500 and total spending is 540, the government must finance a 40 budget shortfall, usually by borrowing or using reserves.
A budget is not the same as the national debt, and a budgeted figure is not necessarily the final outturn.
A deficit is a flow shortfall; a surplus is a flow excess
A budget deficit occurs when government expenditure exceeds revenue during a period. A budget surplus occurs when revenue exceeds expenditure; a balanced budget has equal flows.
The sign describes the current period’s balance, not the accumulated debt. A deficit may be deliberate fiscal stimulus or the result of weak tax receipts and higher welfare payments during a downturn.
Revenue of 700 and spending of 760 give a deficit of 60. If next year’s revenue is 780 and spending 750, that year has a surplus, but the earlier debt need not disappear.
A surplus does not automatically mean debt fell: interest, refinancing and asset transactions also affect the debt stock.
Judge the significance of national debt
National debt is the outstanding stock of government borrowing accumulated from past financing. A budget deficit normally adds to the stock; a surplus can help reduce it. Debt is commonly compared with GDP because GDP indicates the scale of the economy and potential tax base.
| Condition | Why significance changes |
|---|---|
| Interest rate and maturity | Higher servicing/refinancing costs use revenue that could fund other priorities |
| Economic growth | If GDP and tax capacity grow faster than debt, debt-to-GDP and burden may fall |
| Purpose of borrowing | Productive infrastructure can raise future capacity; persistent current financing may not |
| Source and currency | Foreign-currency debt adds exchange-rate risk; domestic borrowing may crowd out private investment |
| Confidence and scale | Very high or rapidly rising debt can increase perceived risk and future tax pressure |
A deficit of 5 may add about 5 to debt, yet debt-to-GDP can fall if nominal GDP grows faster. Conversely, debt above twice annual GDP indicates substantial borrowing, but affordability still depends on interest, growth and financing terms.
Debt is not the annual deficit or all private debt. A higher debt stock is not automatically harmful, but neither is borrowing harmless simply because it financed investment: judge costs, returns and sustainability.
Classify taxes and calculate marginal and average rates
| Tax-base classification | Meaning | Example |
|---|---|---|
| Direct | Levied directly on income, profit or wealth | Personal income tax; corporation tax |
| Indirect | Levied on spending, goods or transactions | VAT/sales tax; excise duty |
| Income-burden classification | Average tax rate as income rises |
|---|---|
| Progressive | Rises: higher-income groups pay a higher proportion |
| Proportional | Remains constant |
| Regressive | Falls: lower-income groups pay a higher proportion |
\text{ART}=\frac{\text{total tax paid}}{\text{total income}}\times100\text{MRT}=\frac{\text{change in tax paid}}{\text{change in income}}\times100
At income 50,000withtotaltax8,000, ART is 16%. If tax rises from 6,000at40,000 income to 8,000at50,000, MRT is 2,000/10,000×100=20%. MRT applies to the extra income, not the whole $50,000.
Governments tax to raise revenue for public spending; redistribute income; discourage demerit goods and correct external costs; influence AD and price stability; and alter incentives or resource allocation.
The two classifications are independent: a direct tax can be progressive or proportional, while an indirect tax is often regressive in income terms but not regressive by definition. Tax incidence and revenue also depend on behavioural responses.
Distinguish current and capital government spending
| Type | What it funds | Examples | Main time profile |
|---|---|---|---|
| Current spending | Day-to-day delivery and recurring payments | Public-sector wages, medicines, building rent, pensions and benefits | Maintains services or income now |
| Capital spending (investment) | Creation or improvement of productive public assets | Roads, rail, school buildings, classroom computers | Raises current AD and may expand future capacity |
| Reason | Economic channel |
|---|---|
| Provide public/merit goods and services | Funds provision the market may under-supply |
| Redistribute income | Transfers support household disposable income |
| Stabilise activity | Purchases or transfers can influence AD, output and employment |
| Raise productive capacity | Education, health and infrastructure can improve human/physical capital and productivity |
Building a rail line is capital spending: it directly purchases current construction output and may later improve productivity. A pension is a current transfer: it redistributes income and affects AD only when the recipient spends it.
Not every government payment enters G directly. Government purchases of current goods/services and capital assets do; transfers are not payment for current production. Current spending is not automatically wasteful, and capital spending is not automatically productive.
Fiscal policy stance describes whether the budget supports or restrains demand
An expansionary fiscal stance raises aggregate demand through higher spending, lower taxes or larger transfers. A contractionary stance restrains demand through lower spending or higher taxes; a neutral stance broadly leaves the demand impulse unchanged.
Judge the stance by its effect relative to the existing position, not just by whether the budget is in deficit. Automatic stabilisers can make the balance move without a new discretionary decision.
A tax cut during a recession is expansionary even if the government still reports a deficit. A spending cut that reduces an existing deficit is contractionary, although debt may remain high.
A deficit is not synonymous with expansionary policy: a deficit can widen automatically in a downturn while discretionary policy is tightening.
Use AD/AS to predict fiscal-policy outcomes
Trace fiscal policy in four steps: identify the spending/tax/transfer change; show its effect on C, I or G; shift AD right for expansion or left for contraction; read the new AD/AS equilibrium for national income/real output, price level and employment.
| Policy and shift | Real output/national income | Price level | Employment |
|---|---|---|---|
| Expansionary: higher G/transfers or lower taxes → AD right | Usually rises | Usually rises | Usually rises / cyclical unemployment falls |
| Contractionary: lower G/transfers or higher taxes → AD left | Usually falls | Usually falls or inflation pressure eases | Usually falls / unemployment rises |
The sizes depend on the AS shape and starting position. With substantial spare capacity, AD expansion can raise output and employment with little price pressure. Near full employment or on a steep/vertical AS section, output responds less and the price level responds more. A small contraction on a highly elastic section may reduce output/employment with little price change.
Some fiscal measures also affect AS. Infrastructure, education or investment incentives can shift LRAS right after a time lag; lower taxes on firms or production subsidies may raise SRAS and/or LRAS. Analyse the demand effect first, then add a supported supply effect.
Higher infrastructure spending shifts AD right immediately through G. Construction raises output and jobs; inflation depends on spare capacity. If the completed infrastructure improves productivity, LRAS later shifts right, allowing higher sustainable output with less price pressure.
Fiscal expansion does not guarantee a fixed change in GDP or an improvement in every objective. Multiplier calculations are not required in this syllabus; focus on the supported AD/AS shifts, equilibrium outcomes, capacity and time horizon.